/* roulang page: index */
:root{
  --bg:#060A12;--bg-2:#0B1220;--surface:#111A2B;
  --line:rgba(255,255,255,.07);--line-2:rgba(255,255,255,.10);
  --brand:#2FD8FF;--brand-deep:#1273EA;--accent:#FFB03A;--magenta:#FF5E8A;
  --text:#EAF2FF;--text-2:#A8B6CE;--text-3:#6E7E99;
  --r-sm:6px;--r-md:14px;--r-lg:22px;
  --shadow-card:0 8px 24px rgba(0,0,0,.35);
  --shadow-deep:0 24px 64px rgba(0,0,0,.5);
  --glow:0 0 0 1px rgba(47,216,255,.35),0 8px 28px rgba(47,216,255,.28);
  --container:1280px;--ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;color:var(--text);background-color:var(--bg);
  background-image:
    radial-gradient(1100px 560px at 12% -8%,rgba(47,216,255,.10),transparent 62%),
    radial-gradient(900px 520px at 92% 6%,rgba(18,115,234,.10),transparent 62%);
  background-repeat:no-repeat;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;line-height:1.75;letter-spacing:0;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
h1,h2,h3,h4,p,figure{margin:0}
ul,ol{list-style:none;margin:0;padding:0}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button,input{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
.num{font-variant-numeric:tabular-nums;font-family:"DIN Alternate","SF Mono",ui-monospace,Menlo,Consolas,monospace}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px}
.section{padding:96px 0}
.section--alt{background:var(--bg-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section--tight{padding:56px 0}

/* ---------- header ---------- */
.site-header{position:fixed;top:0;left:0;right:0;z-index:120;height:64px;
  background:rgba(6,10,18,0);border-bottom:1px solid transparent;
  transition:height .3s var(--ease),background .3s var(--ease),border-color .3s var(--ease)}
.site-header.is-scrolled{height:56px;background:rgba(17,26,43,.62);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom-color:var(--line);box-shadow:0 8px 24px rgba(0,0,0,.35)}
.header-inner{display:flex;align-items:center;height:100%;gap:28px}
.logo{display:inline-flex;align-items:center;gap:10px;font-weight:700;font-size:17px;
  color:var(--text);white-space:nowrap;letter-spacing:.01em}
.logo-mark{width:26px;height:26px;border-radius:8px;flex:none;position:relative;
  background:linear-gradient(120deg,var(--brand),var(--brand-deep));
  box-shadow:0 0 0 1px rgba(47,216,255,.35),0 4px 14px rgba(47,216,255,.25)}
.logo-mark::after{content:"";position:absolute;top:50%;left:52%;transform:translate(-50%,-50%);
  width:0;height:0;border-style:solid;border-width:6px 0 6px 9px;
  border-color:transparent transparent transparent #04121F}
.main-nav{display:flex;align-items:center;gap:2px}
.main-nav a{position:relative;display:block;padding:8px 14px;font-size:14px;
  color:var(--text-2);border-radius:8px;transition:color .2s var(--ease)}
.main-nav a::after{content:"";position:absolute;left:14px;right:14px;bottom:1px;height:2px;
  border-radius:2px;background:var(--brand);box-shadow:0 0 10px var(--brand);
  opacity:0;transform:scaleX(.35);transition:opacity .24s var(--ease),transform .24s var(--ease)}
.main-nav a:hover{color:var(--text)}
.main-nav a:hover::after,.main-nav a.is-active::after{opacity:1;transform:scaleX(1)}
.main-nav a.is-active{color:var(--text)}
.header-right{display:flex;align-items:center;gap:12px;margin-left:auto}
.cmd-search{position:relative;width:300px;flex:none}
.cmd-search input{width:100%;height:38px;padding:0 60px 0 38px;background:var(--surface);
  border:1px solid var(--line-2);border-radius:10px;font-size:14px;color:var(--text);
  outline:none;transition:border-color .2s var(--ease),box-shadow .2s var(--ease)}
.cmd-search input::placeholder{color:var(--text-3)}
.cmd-search input:focus{border-color:var(--brand);box-shadow:0 0 0 2px rgba(47,216,255,.18)}
.cmd-search .fa-magnifying-glass{position:absolute;left:13px;top:50%;transform:translateY(-50%);
  color:var(--text-3);font-size:13px}
.cmd-kbd{position:absolute;right:9px;top:50%;transform:translateY(-50%);
  font-size:11px;line-height:1.7;padding:0 6px;color:var(--text-3);
  border:1px solid var(--line-2);border-radius:6px;background:rgba(255,255,255,.04)}
.icon-btn{width:38px;height:38px;display:grid;place-items:center;border-radius:10px;flex:none;
  border:1px solid var(--line-2);background:rgba(255,255,255,.02);color:var(--text-2);
  transition:.2s var(--ease)}
.icon-btn:hover{color:var(--brand);border-color:rgba(47,216,255,.4)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:40px;padding:0 20px;border-radius:10px;font-size:14px;font-weight:600;
  border:1px solid transparent;cursor:pointer;white-space:nowrap;
  transition:transform .22s var(--ease),filter .22s var(--ease),border-color .22s var(--ease),color .22s var(--ease),box-shadow .22s var(--ease)}
.btn-primary{background:linear-gradient(120deg,var(--brand),var(--brand-deep));
  color:#04121F;box-shadow:var(--glow)}
.btn-primary:hover{filter:brightness(1.07);transform:translateY(-1px)}
.btn-ghost{background:rgba(255,255,255,.03);border-color:var(--line-2);color:var(--text)}
.btn-ghost:hover{border-color:rgba(47,216,255,.45);color:var(--brand)}
.btn:active{transform:translateY(0) scale(.99)}
.btn-lg{height:46px;padding:0 26px;font-size:15px;border-radius:12px}
.btn[disabled]{opacity:.5;cursor:not-allowed}
.burger{display:none}

/* ---------- drawer ---------- */
.drawer-mask{position:fixed;inset:0;background:rgba(3,6,12,.6);z-index:130;
  opacity:0;visibility:hidden;transition:.28s var(--ease)}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{position:fixed;top:0;right:0;bottom:0;width:84vw;max-width:360px;z-index:140;
  background:rgba(17,26,43,.78);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-left:1px solid var(--line-2);transform:translateX(100%);
  transition:transform .3s var(--ease);display:flex;flex-direction:column;padding:20px}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.drawer nav a{display:flex;align-items:center;height:52px;padding:0 4px;
  font-size:16px;color:var(--text-2);border-bottom:1px solid var(--line)}
.drawer nav a.is-active{color:var(--brand)}
.drawer-foot{margin-top:auto;padding-top:20px}

/* ---------- hero ---------- */
.hero{position:relative;min-height:560px;height:80vh;display:flex;align-items:center;
  overflow:hidden;padding:104px 0 72px}
.hero-bg{position:absolute;inset:0;background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center 26%}
.hero-bg::after{content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(6,10,18,.95) 0%,rgba(6,10,18,.80) 45%,rgba(6,10,18,.38) 100%),
  linear-gradient(0deg,var(--bg) 2%,rgba(6,10,18,0) 46%)}
.hero-inner{position:relative;z-index:3;width:100%}
.hero-card{max-width:680px;padding:34px 36px;border-radius:var(--r-lg);
  background:rgba(17,26,43,.55);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border:1px solid rgba(255,255,255,.09);box-shadow:var(--shadow-deep)}
.hero-badge{display:inline-flex;align-items:center;gap:8px;padding:5px 13px;
  border-radius:999px;font-size:13px;color:var(--brand);
  background:rgba(47,216,255,.10);border:1px solid rgba(47,216,255,.30)}
.hero-card h1{font-size:48px;line-height:1.2;font-weight:700;margin:18px 0 16px;letter-spacing:-.01em}
.hero-card .sub{font-size:16px;color:var(--text-2);max-width:580px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:28px}
.hero-trust{position:absolute;right:32px;bottom:52px;z-index:3;display:flex;gap:10px}
.hero-trust span{display:inline-flex;align-items:center;gap:8px;padding:8px 15px;
  border-radius:999px;font-size:13px;color:var(--text-2);
  background:rgba(17,26,43,.55);backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);border:1px solid var(--line-2)}
.hero-trust i{color:var(--brand)}

/* ---------- section head ---------- */
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;
  letter-spacing:.14em;color:var(--brand);text-transform:uppercase;margin-bottom:10px}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--brand);opacity:.7}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:34px}
.section-head h2{font-size:30px;line-height:1.25;font-weight:700;letter-spacing:-.01em}
.section-head .lead{margin-top:10px;font-size:15px;color:var(--text-2);max-width:640px}
.more-link{display:inline-flex;align-items:center;gap:7px;font-size:14px;color:var(--text-2);
  transition:color .2s var(--ease)}
.more-link:hover{color:var(--brand)}
.section-tools{display:flex;align-items:center;gap:14px}

/* ---------- reel scroller ---------- */
.reel-wrap{margin-top:4px}
.scroller{display:flex;gap:16px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding:4px 4px 12px;scrollbar-width:none;-ms-overflow-style:none}
.scroller::-webkit-scrollbar{display:none}
.reel-card{flex:0 0 260px;scroll-snap-align:start;border-radius:var(--r-md);
  background:var(--surface);border:1px solid var(--line);overflow:hidden;
  transition:transform .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease)}
.reel-card:hover{transform:translateY(-4px);border-color:rgba(47,216,255,.35);box-shadow:var(--shadow-card)}
.reel-cover{position:relative;aspect-ratio:16/9;overflow:hidden;background:linear-gradient(120deg,#0e1c33,#16273f)}
.reel-cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.reel-card:hover .reel-cover img{transform:scale(1.05)}
.reel-body{padding:14px 16px 16px}
.reel-body h3{font-size:15px;font-weight:600;line-height:1.5;
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.reel-meta{display:flex;align-items:center;gap:10px;margin-top:8px;font-size:12.5px;color:var(--text-3)}
.reel-meta .score{color:var(--accent);font-weight:600}
.reel-hover{position:absolute;inset:0;display:grid;place-items:center;
  background:linear-gradient(0deg,rgba(6,10,18,.72),rgba(6,10,18,.32));
  opacity:0;transition:opacity .24s var(--ease)}
.reel-card:hover .reel-hover{opacity:1}
.reel-hover span{display:inline-flex;align-items:center;gap:7px;height:34px;padding:0 16px;
  border-radius:999px;font-size:13px;font-weight:600;color:#04121F;
  background:linear-gradient(120deg,var(--brand),var(--brand-deep))}
.badge-cat{display:inline-flex;align-items:center;height:22px;padding:0 9px;
  border-radius:var(--r-sm);font-size:12px;color:var(--text-2);
  background:rgba(17,26,43,.72);border:1px solid var(--line-2);backdrop-filter:blur(6px)}
.reel-cover .badge-cat{position:absolute;top:10px;left:10px;z-index:2}
.arrow-group{display:flex;gap:8px}
.arrow-btn{width:36px;height:36px;border-radius:50%;display:grid;place-items:center;
  border:1px solid var(--line-2);background:rgba(255,255,255,.03);color:var(--text-2);
  transition:.2s var(--ease)}
.arrow-btn:hover{color:var(--brand);border-color:rgba(47,216,255,.45)}

/* ---------- hot grid ---------- */
.hot-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,2fr);gap:24px}
.hot-main{position:relative;border-radius:var(--r-lg);overflow:hidden;
  border:1px solid var(--line);background:var(--surface);min-height:280px;display:block}
.hot-main img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0;
  transition:transform .5s var(--ease)}
.hot-main:hover img{transform:scale(1.04)}
.hot-main-body{position:absolute;left:0;right:0;bottom:0;padding:26px 26px 24px;z-index:2;
  background:linear-gradient(0deg,rgba(4,8,16,.92),rgba(4,8,16,.15) 70%,transparent)}
.hot-main .rank{position:absolute;top:14px;left:20px;z-index:3;font-size:70px;
  font-weight:800;line-height:1;color:transparent;-webkit-text-stroke:2px var(--accent);
  opacity:.92;letter-spacing:-.04em}
.hot-main-body h3{font-size:21px;font-weight:700;line-height:1.35;margin-top:8px}
.hot-main-body p{font-size:13.5px;color:var(--text-2);margin-top:8px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.hot-mini{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
.mini{display:flex;gap:12px;align-items:center;padding:10px;border-radius:var(--r-md);
  background:var(--surface);border:1px solid var(--line);
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease)}
.mini:hover{transform:translateY(-3px);border-color:rgba(47,216,255,.32);box-shadow:var(--shadow-card)}
.mini img{width:88px;height:62px;object-fit:cover;border-radius:8px;flex:none}
.mini h4{font-size:14px;font-weight:600;line-height:1.45;
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.mini .mini-meta{display:flex;gap:8px;font-size:12px;color:var(--text-3);margin-top:5px}
.mini .mini-meta .score{color:var(--accent);font-weight:600}
.mini .mini-no{font-size:12px;color:var(--accent);font-weight:700}

/* ---------- cms ---------- */
.cms-grid{display:grid;grid-template-columns:1.5fr 1fr;gap:32px;align-items:start}
.cms-feature{display:flex;flex-direction:column;border-radius:var(--r-lg);overflow:hidden;
  background:var(--surface);border:1px solid var(--line);
  transition:transform .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease)}
.cms-feature:hover{transform:translateY(-4px);border-color:rgba(47,216,255,.28);box-shadow:var(--shadow-card)}
.cms-feature-cover{position:relative;aspect-ratio:16/9;overflow:hidden;background:linear-gradient(120deg,#0e1c33,#16273f)}
.cms-feature-cover img{width:100%;height:100%;object-fit:cover}
.cms-feature-body{padding:22px 24px 24px}
.cms-feature-body h3{font-size:21px;font-weight:700;line-height:1.4}
.cms-feature-body .desc{margin-top:12px;font-size:14.5px;color:var(--text-2);
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.cms-meta{display:flex;align-items:center;gap:12px;margin-top:16px;font-size:12.5px;color:var(--text-3)}
.cms-meta .cat{color:var(--magenta)}
.cms-list{display:flex;flex-direction:column}
.cms-list .item{border-bottom:1px solid var(--line);padding:16px 0;transition:padding-left .22s var(--ease)}
.cms-list .item:first-child{padding-top:6px}
.cms-list .item:last-child{border-bottom:0;padding-bottom:6px}
.cms-list .item:hover{padding-left:6px}
.cms-list .title{font-size:15.5px;font-weight:600;line-height:1.5;
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.cms-list .item:hover .title{color:var(--brand)}
.cms-list .desc{margin-top:6px;font-size:13.5px;color:var(--text-2);
  display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden}
.cms-list .meta{display:flex;gap:12px;margin-top:8px;font-size:12px;color:var(--text-3)}
.cms-list .meta .cat{color:var(--magenta)}
.cms-empty{grid-column:1/-1;display:flex;flex-direction:column;align-items:center;
  gap:12px;padding:56px 24px;border-radius:var(--r-lg);
  background:var(--surface);border:1px dashed var(--line-2);text-align:center}
.cms-empty i{font-size:26px;color:var(--text-3)}
.cms-empty p{font-size:14.5px;color:var(--text-2)}

/* ---------- tabs / playlist ---------- */
.tabbed{margin-top:8px}
.tabs{display:inline-flex;gap:6px;padding:5px;border-radius:12px;
  background:var(--surface);border:1px solid var(--line);margin-bottom:26px}
.tab{height:36px;padding:0 20px;border-radius:9px;font-size:14px;color:var(--text-2);
  transition:.2s var(--ease)}
.tab:hover{color:var(--text)}
.tab.is-active{color:#04121F;font-weight:600;
  background:linear-gradient(120deg,var(--brand),var(--brand-deep));
  box-shadow:0 6px 18px rgba(47,216,255,.22)}
.tab-panel{display:none}
.tab-panel.is-active{display:block;animation:fadeUp .3s var(--ease) both}
@keyframes fadeUp{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
.playlist-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.pl-card{border-radius:var(--r-md);overflow:hidden;background:var(--surface);
  border:1px solid var(--line);display:flex;flex-direction:column;
  transition:transform .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease)}
.pl-card:hover{transform:translateY(-4px);border-color:rgba(47,216,255,.32);box-shadow:var(--shadow-card)}
.pl-card--wide{grid-column:span 2;flex-direction:row}
.pl-card--wide .pl-cover{flex:0 0 46%;aspect-ratio:auto;min-height:220px}
.pl-card--wide .pl-body{padding:24px}
.pl-cover{position:relative;aspect-ratio:16/10;overflow:hidden;background:linear-gradient(120deg,#0e1c33,#16273f)}
.pl-cover img{width:100%;height:100%;object-fit:cover}
.pl-cover .badge-cat{position:absolute;top:10px;left:10px;z-index:2}
.pl-body{padding:16px;display:flex;flex-direction:column;flex:1}
.pl-body h3{font-size:16px;font-weight:600;line-height:1.45}
.pl-body .desc{margin-top:8px;font-size:13.5px;color:var(--text-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.pl-card--wide .pl-body .desc{-webkit-line-clamp:3;font-size:14.5px}
.pl-body .meta-line{margin-top:auto;padding-top:12px;display:flex;gap:12px;
  font-size:12.5px;color:var(--text-3)}
.pl-body .meta-line .score{color:var(--accent);font-weight:600}

/* ---------- stats ---------- */
.stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.stats li{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  padding:22px 22px 20px;transition:border-color .22s var(--ease)}
.stats li:hover{border-color:rgba(47,216,255,.28)}
.stats strong{display:block;font-size:30px;font-weight:700;line-height:1.2;color:var(--brand)}
.stats span{display:block;margin-top:6px;font-size:13.5px;color:var(--text-2)}

/* ---------- steps ---------- */
.steps{position:relative;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));
  gap:28px;margin-top:8px}
.steps::before{content:"";position:absolute;left:0;right:0;top:26px;height:1px;
  background:linear-gradient(90deg,rgba(47,216,255,.5),rgba(47,216,255,.06))}
.steps li{position:relative;padding-top:0}
.step-no{display:inline-flex;align-items:center;justify-content:center;width:52px;height:52px;
  border-radius:16px;font-size:17px;font-weight:700;color:var(--brand);
  background:var(--bg);border:1px solid rgba(47,216,255,.32);position:relative;z-index:2}
.steps h3{margin-top:20px;font-size:18px;font-weight:600}
.steps p{margin-top:10px;font-size:14.5px;color:var(--text-2)}

/* ---------- faq ---------- */
.faq-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 48px}
.faq-item{border-bottom:1px solid var(--line-2);position:relative}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:19px 0 19px 0;text-align:left;font-size:16px;font-weight:600;color:var(--text);
  position:relative;transition:color .2s var(--ease)}
.faq-q:hover{color:var(--brand)}
.faq-q i{font-size:13px;color:var(--text-3);transition:transform .2s var(--ease),color .2s var(--ease)}
.faq-item.is-open .faq-q::before{content:"";position:absolute;left:-16px;top:20px;bottom:20px;
  width:3px;border-radius:3px;background:var(--brand);box-shadow:0 0 10px var(--brand)}
.faq-item.is-open .faq-q i{transform:rotate(180deg);color:var(--brand)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s var(--ease);
  font-size:15px;line-height:1.7;color:var(--text-2)}
.faq-item.is-open .faq-a{max-height:260px}
.faq-a p{padding-bottom:20px}

/* ---------- cta ---------- */
.cta-banner{display:flex;align-items:center;justify-content:space-between;gap:32px;
  padding:40px 44px;border-radius:var(--r-lg);
  background:rgba(17,26,43,.55);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border:1px solid rgba(47,216,255,.28);
  box-shadow:0 0 0 1px rgba(47,216,255,.12),0 20px 60px rgba(0,0,0,.45)}
.cta-banner h2{font-size:26px;font-weight:700;line-height:1.35}
.cta-banner p{margin-top:10px;font-size:14.5px;color:var(--text-2);max-width:620px}
.cta-actions{display:flex;align-items:center;gap:20px;flex:none}
.cta-link{font-size:14px;color:var(--text-2);text-decoration:underline;
  text-underline-offset:5px;transition:color .2s var(--ease)}
.cta-link:hover{color:var(--brand)}

/* ---------- footer ---------- */
.site-footer{background:#04070E;border-top:1px solid rgba(255,255,255,.08);padding-top:64px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px}
.footer-brand p{margin-top:16px;font-size:14px;color:var(--text-2);max-width:320px}
.footer-col h4{font-size:14px;font-weight:600;color:var(--text);margin-bottom:16px}
.footer-col ul li{margin-bottom:10px;font-size:14px;color:var(--text-2)}
.footer-col ul a{transition:color .2s var(--ease)}
.footer-col ul a:hover{color:var(--brand)}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 32px 26px;border-top:1px solid rgba(255,255,255,.08);
  font-size:13px;color:var(--text-3);max-width:var(--container);margin:0 auto}
.back-top{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--text-2);
  transition:color .2s var(--ease)}
.back-top:hover{color:var(--brand)}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);
  transition:opacity .3s var(--ease),transform .3s var(--ease)}
.reveal.is-in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* ---------- responsive ---------- */
@media(max-width:1279px){
  .cmd-search{width:220px}
}
@media(max-width:1023px){
  .container{padding:0 24px}
  .section{padding:64px 0}
  .section--tight{padding:44px 0}
  .main-nav,.cmd-search{display:none}
  .burger{display:grid}
  .hero{height:auto;min-height:520px;padding:112px 0 64px}
  .hero-card{padding:26px 24px}
  .hero-card h1{font-size:34px}
  .hero-trust{display:none}
  .hot-grid{grid-template-columns:1fr}
  .hot-main{min-height:340px}
  .hot-mini{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cms-grid{grid-template-columns:1fr;gap:24px}
  .playlist-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .pl-card--wide{grid-column:span 2;flex-direction:column}
  .pl-card--wide .pl-cover{flex:none;aspect-ratio:16/9;min-height:0}
  .stats{grid-template-columns:repeat(2,minmax(0,1fr))}
  .steps{grid-template-columns:1fr;gap:0}
  .steps::before{display:none}
  .steps li{padding:22px 0;border-bottom:1px solid var(--line)}
  .steps li:last-child{border-bottom:0}
  .steps h3{margin-top:16px}
  .faq-grid{grid-template-columns:1fr;gap:0}
  .faq-item.is-open .faq-q::before{left:-10px}
  .cta-banner{flex-direction:column;align-items:flex-start;padding:32px 26px}
  .cta-actions{width:100%;flex-direction:column;align-items:stretch;gap:14px}
  .cta-actions .btn{width:100%}
  .cta-link{text-align:center}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .footer-bottom{padding:20px 24px 26px;flex-direction:column;align-items:flex-start;gap:12px}
}
@media(max-width:639px){
  .container{padding:0 16px}
  .logo{font-size:15px}
  .hero-card h1{font-size:28px}
  .hero-card .sub{font-size:15px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px}
  .section-head h2{font-size:23px}
  .reel-card{flex:0 0 200px}
  .hot-mini{grid-template-columns:1fr}
  .playlist-grid{grid-template-columns:1fr}
  .pl-card--wide{grid-column:span 1}
  .stats{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .arrow-group{display:none}
  .faq-q{font-size:15px}
  .up{display:none}
}

/* roulang page: article */
:root{
  --bg:#060A12;
  --bg-2:#0B1220;
  --surface:#111A2B;
  --surface-2:#162133;
  --line:rgba(255,255,255,.07);
  --line-2:rgba(255,255,255,.10);
  --brand:#2FD8FF;
  --brand-deep:#1273EA;
  --amber:#FFB03A;
  --magenta:#FF5E8A;
  --text:#EAF2FF;
  --text-2:#A8B6CE;
  --text-3:#6E7E99;
  --r-s:6px;
  --r-m:14px;
  --r-l:22px;
  --shadow:0 8px 24px rgba(0,0,0,.35);
  --glow:0 0 0 1px rgba(47,216,255,.35), 0 8px 28px rgba(47,216,255,.28);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.024) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.024) 1px,transparent 1px);
  background-size:72px 72px;
}
img{max-width:100%;display:block;height:auto;border:0}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,h5,p,figure,blockquote{margin:0}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}
::selection{background:rgba(47,216,255,.28)}
.container{width:100%;max-width:1280px;margin:0 auto;padding:0 32px;position:relative;z-index:1}
.section{padding:96px 0}
.section-sm{padding:64px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px}
.section-head h2{font-size:30px;line-height:1.25;font-weight:700}
.section-head p{color:var(--text-2);font-size:15px;margin-top:8px;max-width:560px}
.link-more{font-size:14px;color:var(--brand);display:inline-flex;align-items:center;gap:6px;white-space:nowrap}
.link-more:hover{text-decoration:underline}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  border-bottom:1px solid transparent;
  transition:background .3s var(--ease),border-color .3s var(--ease),height .3s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(17,26,43,.55);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-bottom-color:var(--line-2);
}
.site-header.is-scrolled .header-inner{height:56px}
.header-inner{display:flex;align-items:center;gap:24px;height:64px;transition:height .3s var(--ease)}
.logo{display:inline-flex;align-items:center;gap:10px;font-weight:700;font-size:17px;letter-spacing:.2px;white-space:nowrap}
.logo-mark{
  width:26px;height:26px;border-radius:8px;flex:0 0 auto;
  background:linear-gradient(120deg,var(--brand),var(--brand-deep));
  box-shadow:0 0 0 1px rgba(47,216,255,.28),0 6px 18px rgba(47,216,255,.22);
  position:relative;
}
.logo-mark::after{
  content:"";position:absolute;inset:8px 9px 8px 10px;border-radius:2px;
  background:rgba(6,10,18,.85);
  clip-path:polygon(0 0,100% 50%,0 100%);
}
.main-nav{display:flex;align-items:center;gap:28px;margin-left:8px}
.main-nav a{
  font-size:14px;color:var(--text-2);position:relative;padding:6px 0;transition:color .2s var(--ease);
}
.main-nav a::after{
  content:"";position:absolute;left:0;right:0;bottom:-4px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--brand),var(--brand-deep));
  transform:scaleX(0);transform-origin:left;transition:transform .24s var(--ease);
  box-shadow:0 0 12px rgba(47,216,255,.7);
}
.main-nav a:hover{color:var(--text)}
.main-nav a:hover::after{transform:scaleX(1)}
.main-nav a.is-active{color:var(--text)}
.main-nav a.is-active::after{transform:scaleX(1)}
.header-right{display:flex;align-items:center;gap:12px;margin-left:auto}
.cmd-search{
  display:flex;align-items:center;gap:10px;
  width:300px;height:40px;padding:0 12px;
  background:var(--surface);border:1px solid var(--line);border-radius:10px;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.cmd-search i{color:var(--text-3);font-size:13px}
.cmd-search input{
  flex:1;min-width:0;background:none;border:0;font-size:13px;color:var(--text);
}
.cmd-search input::placeholder{color:var(--text-3)}
.cmd-search:focus-within{border-color:rgba(47,216,255,.55);box-shadow:0 0 0 2px rgba(47,216,255,.18)}
.cmd-kbd{
  font-size:11px;color:var(--text-3);border:1px solid var(--line-2);border-radius:4px;
  padding:1px 5px;line-height:1.5;white-space:nowrap;
}
.icon-btn{
  width:40px;height:40px;border-radius:10px;border:1px solid var(--line);
  background:var(--surface);color:var(--text-2);
  display:inline-flex;align-items:center;justify-content:center;
  transition:color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.icon-btn:hover{color:var(--brand);border-color:rgba(47,216,255,.4);transform:translateY(-1px)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:40px;padding:0 18px;border-radius:10px;font-size:14px;font-weight:600;
  border:1px solid transparent;transition:all .22s var(--ease);white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(120deg,var(--brand),var(--brand-deep));
  color:#04121C;
  box-shadow:var(--glow);
}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 0 0 1px rgba(47,216,255,.5),0 12px 32px rgba(47,216,255,.36)}
.btn-ghost{
  border-color:var(--line-2);color:var(--text);background:rgba(17,26,43,.45);
}
.btn-ghost:hover{border-color:rgba(47,216,255,.45);color:var(--brand)}
.btn-sm{height:36px;padding:0 14px;font-size:13px;border-radius:8px}
.burger{display:none}

/* ============ 移动抽屉 ============ */
.drawer-mask{
  position:fixed;inset:0;background:rgba(6,10,18,.62);z-index:80;opacity:0;visibility:hidden;
  transition:opacity .26s var(--ease),visibility .26s var(--ease);
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:84vw;max-width:360px;z-index:90;
  background:rgba(17,26,43,.92);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  border-left:1px solid var(--line-2);
  transform:translateX(100%);transition:transform .3s var(--ease);
  display:flex;flex-direction:column;padding:20px;
}
.drawer.is-open{transform:translateX(0)}
.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}
.drawer nav a{
  display:flex;align-items:center;height:52px;font-size:16px;color:var(--text-2);
  border-bottom:1px solid var(--line);
}
.drawer nav a.is-active{color:var(--brand)}
.drawer-foot{margin-top:auto;padding-top:16px}
.drawer-foot .btn{width:100%}

/* ============ 面包屑 & 文章头 ============ */
.article-top{padding:40px 0 0;position:relative;z-index:1}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3)}
.breadcrumb a{color:var(--text-3);transition:color .2s var(--ease)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb span.sep{opacity:.5}
.breadcrumb .current{color:var(--text-2);max-width:420px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.badge{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 10px;
  border-radius:var(--r-s);font-size:13px;
  background:rgba(47,216,255,.10);border:1px solid rgba(47,216,255,.28);color:var(--brand);
}
.badge-amber{background:rgba(255,176,58,.10);border-color:rgba(255,176,58,.32);color:var(--amber)}
.badge-magenta{background:rgba(255,94,138,.10);border-color:rgba(255,94,138,.30);color:var(--magenta)}
.article-title{
  font-size:44px;line-height:1.25;font-weight:700;max-width:960px;
  margin:20px 0 0;letter-spacing:0;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:14px;
  margin-top:20px;font-size:13px;color:var(--text-3);
}
.article-meta .num{font-variant-numeric:tabular-nums;font-family:ui-monospace,"SFMono-Regular",Menlo,monospace}
.article-meta .dot{width:1px;height:12px;background:var(--line-2)}
.article-cover{
  margin-top:32px;border-radius:var(--r-l);overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--shadow);
  aspect-ratio:16/9;background:linear-gradient(120deg,rgba(47,216,255,.18),rgba(18,115,234,.16));
}
.article-cover img{width:100%;height:100%;object-fit:cover}

/* ============ 文章布局 ============ */
.article-layout{
  display:grid;grid-template-columns:minmax(0,1fr) 320px;
  gap:48px;align-items:start;padding:56px 0 96px;position:relative;z-index:1;
}
.article-main{max-width:820px;min-width:0}

/* 富文本正文 */
.rich{font-size:16px;line-height:1.85;color:var(--text-2)}
.rich > * + *{margin-top:20px}
.rich h2{
  position:relative;font-size:28px;line-height:1.3;font-weight:700;color:var(--text);
  margin-top:48px;padding-left:16px;
}
.rich h2::before{
  content:"";position:absolute;left:0;top:.28em;bottom:.22em;width:3px;border-radius:3px;
  background:linear-gradient(180deg,var(--brand),var(--brand-deep));
  box-shadow:0 0 14px rgba(47,216,255,.55);
}
.rich h3{font-size:21px;line-height:1.4;font-weight:700;color:var(--text);margin-top:36px}
.rich h4{font-size:17px;font-weight:700;color:var(--text);margin-top:28px}
.rich p{color:var(--text-2)}
.rich strong{color:var(--text)}
.rich a{color:var(--brand);text-decoration:underline;text-underline-offset:3px}
.rich img{border-radius:var(--r-m);margin:28px auto;box-shadow:var(--shadow)}
.rich ul,.rich ol{margin:20px 0;padding-left:2px}
.rich ul li{position:relative;padding-left:22px;margin-bottom:10px}
.rich ul li::before{
  content:"";position:absolute;left:4px;top:.72em;width:6px;height:6px;border-radius:50%;
  background:var(--brand);box-shadow:0 0 8px rgba(47,216,255,.7);
}
.rich ol{counter-reset:num;list-style:none}
.rich ol li{position:relative;padding-left:30px;margin-bottom:10px;counter-increment:num}
.rich ol li::before{
  content:counter(num,decimal-leading-zero);
  position:absolute;left:0;top:.1em;font-family:ui-monospace,"SFMono-Regular",Menlo,monospace;
  font-size:13px;color:var(--amber);letter-spacing:0;
}
.rich blockquote{
  margin:28px 0;padding:20px 24px;border-left:3px solid var(--brand);
  background:rgba(17,26,43,.55);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  border-radius:0 var(--r-m) var(--r-m) 0;color:var(--text-2);font-size:15px;line-height:1.8;
}
.rich blockquote p + p{margin-top:12px}
.rich table{
  width:100%;border-collapse:separate;border-spacing:0;
  border:1px solid var(--line);border-radius:var(--r-m);overflow:hidden;font-size:14px;
}
.rich th,.rich td{padding:12px 14px;text-align:left;border-bottom:1px solid var(--line)}
.rich th{background:rgba(47,216,255,.06);color:var(--text);font-weight:600;font-size:13px}
.rich tr:last-child td{border-bottom:0}
.rich tbody tr:nth-child(even) td{background:rgba(255,255,255,.02)}
.rich hr{border:0;border-top:1px solid var(--line-2);margin:40px 0}
.rich code{
  font-family:ui-monospace,"SFMono-Regular",Menlo,monospace;font-size:13px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-s);
  padding:2px 6px;color:var(--brand);
}

/* 标签 + 来源卡 */
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:44px;padding-top:28px;border-top:1px solid var(--line)}
.tag{
  display:inline-flex;align-items:center;height:30px;padding:0 12px;border-radius:var(--r-s);
  font-size:13px;color:var(--text-2);background:var(--surface);border:1px solid var(--line);
  transition:color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.tag:hover{color:var(--brand);border-color:rgba(47,216,255,.4);transform:translateY(-1px)}
.source-card{
  margin-top:24px;padding:20px;border-radius:var(--r-m);
  background:var(--surface);border:1px solid var(--line);
  display:flex;gap:16px;align-items:flex-start;
}
.source-avatar{
  width:44px;height:44px;border-radius:12px;flex:0 0 auto;
  background:linear-gradient(120deg,rgba(47,216,255,.22),rgba(18,115,234,.22));
  border:1px solid rgba(47,216,255,.3);color:var(--brand);
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:16px;
}
.source-card h4{font-size:15px;font-weight:700;color:var(--text);margin-bottom:6px}
.source-card p{font-size:14px;color:var(--text-3);line-height:1.7}
.empty-state{
  padding:64px 24px;text-align:center;border-radius:var(--r-l);
  background:var(--surface);border:1px dashed var(--line-2);
}
.empty-state i{font-size:28px;color:var(--text-3)}
.empty-state h3{font-size:20px;margin:16px 0 8px;color:var(--text)}
.empty-state p{color:var(--text-3);font-size:14px;margin-bottom:20px}

/* ============ 侧栏 ============ */
.article-side{position:sticky;top:88px;display:flex;flex-direction:column;gap:24px}
.side-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-m);
  padding:20px;box-shadow:var(--shadow);
}
.side-card h3{
  font-size:15px;font-weight:700;color:var(--text);margin-bottom:16px;
  display:flex;align-items:center;gap:8px;
}
.side-card h3::before{
  content:"";width:3px;height:14px;border-radius:3px;
  background:linear-gradient(180deg,var(--brand),var(--brand-deep));
  box-shadow:0 0 10px rgba(47,216,255,.6);
}
.side-list li + li{border-top:1px solid var(--line)}
.side-list a{display:flex;gap:12px;padding:14px 0;align-items:flex-start}
.side-list .thumb{
  width:88px;height:56px;border-radius:8px;overflow:hidden;flex:0 0 auto;
  background:linear-gradient(120deg,rgba(47,216,255,.18),rgba(18,115,234,.16));
}
.side-list .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease)}
.side-list a:hover .thumb img{transform:scale(1.06)}
.side-list .t{font-size:14px;color:var(--text);line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.side-list a:hover .t{color:var(--brand)}
.side-list .m{font-size:12px;color:var(--text-3);margin-top:6px;font-variant-numeric:tabular-nums}
.side-nav li a{
  display:flex;align-items:center;justify-content:space-between;
  padding:10px 0;font-size:14px;color:var(--text-2);border-bottom:1px solid var(--line);
  transition:color .2s var(--ease),padding-left .2s var(--ease);
}
.side-nav li:last-child a{border-bottom:0}
.side-nav li a:hover{color:var(--brand);padding-left:4px}
.side-nav i{font-size:11px;color:var(--text-3)}

/* ============ 相关推荐 ============ */
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-m);
  overflow:hidden;display:flex;flex-direction:column;
  transition:transform .26s var(--ease),border-color .26s var(--ease),box-shadow .26s var(--ease);
}
.card:hover{transform:translateY(-4px);border-color:rgba(47,216,255,.4);box-shadow:0 14px 34px rgba(0,0,0,.45)}
.card-cover{position:relative;aspect-ratio:16/9;overflow:hidden;background:linear-gradient(120deg,rgba(47,216,255,.18),rgba(18,115,234,.16))}
.card-cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.card:hover .card-cover img{transform:scale(1.05)}
.score{
  position:absolute;top:10px;right:10px;height:24px;padding:0 8px;border-radius:var(--r-s);
  display:inline-flex;align-items:center;font-size:12px;font-weight:700;
  color:var(--amber);border:1px solid rgba(255,176,58,.55);background:rgba(6,10,18,.6);
  font-variant-numeric:tabular-nums;
}
.card-body{padding:16px 18px 20px;display:flex;flex-direction:column;gap:10px}
.card-body h3{font-size:16px;font-weight:600;color:var(--text);line-height:1.45}
.card-body p{font-size:13px;color:var(--text-3);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-meta{display:flex;align-items:center;gap:10px;font-size:12px;color:var(--text-3);font-variant-numeric:tabular-nums}

/* ============ FAQ ============ */
.faq-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 48px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 0 20px 14px;text-align:left;font-size:16px;font-weight:600;color:var(--text);
  position:relative;transition:color .2s var(--ease);
}
.faq-q::before{
  content:"";position:absolute;left:0;top:18px;bottom:18px;width:3px;border-radius:3px;
  background:linear-gradient(180deg,var(--brand),var(--brand-deep));
  opacity:0;transition:opacity .2s var(--ease);box-shadow:0 0 12px rgba(47,216,255,.65);
}
.faq-item.is-open .faq-q::before{opacity:1}
.faq-q:hover{color:var(--brand)}
.faq-q i{font-size:13px;color:var(--text-3);transition:transform .2s var(--ease)}
.faq-item.is-open .faq-q i{transform:rotate(90deg);color:var(--brand)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s var(--ease)}
.faq-a p{padding:0 0 22px 14px;font-size:15px;line-height:1.75;color:var(--text-2)}

/* ============ CTA 条幅 ============ */
.cta-band{
  border-radius:var(--r-l);padding:40px;
  background:rgba(17,26,43,.55);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  border:1px solid rgba(47,216,255,.28);
  box-shadow:0 0 0 1px rgba(47,216,255,.12),0 20px 50px rgba(0,0,0,.4);
  display:flex;align-items:center;justify-content:space-between;gap:32px;
}
.cta-band h2{font-size:26px;line-height:1.3;font-weight:700}
.cta-band p{color:var(--text-2);font-size:15px;margin-top:10px}
.cta-actions{display:flex;align-items:center;gap:18px;flex:0 0 auto}
.cta-link{font-size:14px;color:var(--text-2);text-decoration:underline;text-underline-offset:4px;white-space:nowrap}
.cta-link:hover{color:var(--brand)}

/* ============ 返回入口 ============ */
.back-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px}

/* ============ 页脚 ============ */
.site-footer{background:#04070D;border-top:1px solid rgba(255,255,255,.08);position:relative;z-index:1;margin-top:24px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding:64px 0 48px}
.footer-brand p{color:var(--text-3);font-size:14px;line-height:1.75;margin-top:14px;max-width:320px}
.footer-col h4{font-size:14px;color:var(--text);font-weight:700;margin-bottom:16px}
.footer-col li{margin-bottom:10px}
.footer-col a,.footer-col li{color:var(--text-3);font-size:14px}
.footer-col a:hover{color:var(--brand)}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 32px;max-width:1280px;margin:0 auto;
  font-size:13px;color:var(--text-3);flex-wrap:wrap;
}
.back-top{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--text-2);
  border:1px solid var(--line);border-radius:8px;padding:6px 12px;background:var(--surface);
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.back-top:hover{color:var(--brand);border-color:rgba(47,216,255,.4)}

/* ============ 入场动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .32s var(--ease),transform .32s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .container{padding:0 24px}
  .cmd-search{width:240px}
}
@media (max-width:1023px){
  .main-nav,.cmd-search,.header-right .icon-btn:not(.burger){display:none}
  .burger{display:inline-flex}
  .header-inner{height:56px}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:40px;padding:40px 0 64px}
  .article-side{position:static;flex-direction:row;flex-wrap:wrap}
  .article-side .side-card{flex:1 1 300px}
  .article-title{font-size:34px}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .section{padding:64px 0}
  .section-sm{padding:48px 0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;padding:48px 0 32px}
  .cta-band{flex-direction:column;align-items:flex-start}
  .cta-actions{width:100%}
}
@media (max-width:767px){
  .faq-grid{grid-template-columns:minmax(0,1fr);gap:0}
  .article-title{font-size:30px}
  .related-grid{grid-template-columns:minmax(0,1fr)}
  .article-meta{gap:10px;font-size:12px}
  .rich h2{font-size:23px}
  .rich h3{font-size:19px}
  .cta-band{padding:28px}
  .cta-band h2{font-size:21px}
  .cta-actions{flex-direction:column;align-items:stretch;gap:12px}
  .cta-actions .btn{width:100%}
  .cta-link{text-align:center}
}
@media (max-width:519px){
  .container{padding:0 16px}
  .article-title{font-size:28px}
  .breadcrumb .current{max-width:180px}
  .source-card{flex-direction:column;gap:12px}
  .side-list .thumb{width:72px;height:46px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start;padding:18px 16px}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* roulang page: category1 */
/* ============ 设计变量 ============ */
:root{
  --bg:#060A12;
  --surface:#0B1220;
  --card:#111A2B;
  --line:rgba(255,255,255,.07);
  --line2:rgba(255,255,255,.10);
  --t1:#EAF2FF;
  --t2:#A8B6CE;
  --t3:#6E7E99;
  --brand:#2FD8FF;
  --brand-deep:#1273EA;
  --amber:#FFB03A;
  --magenta:#FF5E8A;
  --r-sm:6px;
  --r-md:14px;
  --r-lg:22px;
  --sh-card:0 8px 24px rgba(0,0,0,.35);
  --glow:0 0 0 1px rgba(47,216,255,.35),0 8px 28px rgba(47,216,255,.28);
  --ease:cubic-bezier(.2,.7,.3,1);
  --header-h:64px;
}

/* ============ reset ============ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  padding-top:var(--header-h);
  background:var(--bg);
  color:var(--t1);
  font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background-image:linear-gradient(rgba(255,255,255,.028) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.028) 1px,transparent 1px);
  background-size:44px 44px;
}
body.is-locked{overflow:hidden;}
img{max-width:100%;display:block;border-style:none;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;line-height:1.25;font-weight:700;letter-spacing:-.01em;}
p{margin:0;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}
::selection{background:rgba(47,216,255,.28);}

/* ============ 容器 ============ */
.container{
  width:100%;
  max-width:1280px;
  margin:0 auto;
  padding:0 32px;
  position:relative;
  z-index:1;
}
@media (max-width:1023px){.container{padding:0 24px;}}
@media (max-width:640px){.container{padding:0 16px;}}

/* ============ 顶部导航 ============ */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:60;
  height:var(--header-h);
  display:flex;
  align-items:center;
  background:rgba(6,10,18,.72);
  border-bottom:1px solid transparent;
  transition:height .28s var(--ease),background .28s var(--ease),border-color .28s var(--ease),backdrop-filter .28s var(--ease);
}
.site-header.is-scrolled{
  height:56px;
  background:rgba(17,26,43,.55);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom-color:var(--line2);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:28px;
  width:100%;
}
.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-weight:700;
  font-size:17px;
  color:var(--t1);
  white-space:nowrap;
}
.logo-mark{
  width:22px;height:22px;
  border-radius:7px;
  background:linear-gradient(120deg,var(--brand) 0%,var(--brand-deep) 100%);
  box-shadow:0 0 0 1px rgba(47,216,255,.35),0 6px 18px rgba(47,216,255,.30);
  position:relative;
  flex:none;
}
.logo-mark::after{
  content:"";
  position:absolute;
  inset:6px;
  border-radius:3px;
  background:rgba(6,10,18,.85);
}
.main-nav{
  display:flex;
  align-items:center;
  gap:26px;
  margin-left:8px;
}
.main-nav a{
  position:relative;
  font-size:14px;
  color:var(--t2);
  padding:6px 0;
  transition:color .2s var(--ease);
  white-space:nowrap;
}
.main-nav a::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:2px;
  border-radius:2px;
  background:linear-gradient(90deg,var(--brand),var(--brand-deep));
  opacity:0;
  transform:scaleX(.4);
  transition:opacity .2s var(--ease),transform .2s var(--ease);
  box-shadow:0 0 10px rgba(47,216,255,.7);
}
.main-nav a:hover{color:var(--t1);}
.main-nav a:hover::after,
.main-nav a.is-active::after{opacity:1;transform:scaleX(1);}
.main-nav a.is-active{color:var(--t1);}
.header-right{
  margin-left:auto;
  display:flex;
  align-items:center;
  gap:12px;
}
.cmd-search{
  display:flex;
  align-items:center;
  gap:8px;
  width:290px;
  height:38px;
  padding:0 12px;
  border-radius:10px;
  background:var(--card);
  border:1px solid var(--line);
  color:var(--t3);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.cmd-search:focus-within{
  border-color:rgba(47,216,255,.6);
  box-shadow:0 0 0 2px rgba(47,216,255,.20);
}
.cmd-search i{font-size:13px;}
.cmd-search input{
  flex:1;
  min-width:0;
  background:none;
  border:0;
  outline:none;
  color:var(--t1);
  font-size:13.5px;
}
.cmd-search input::placeholder{color:var(--t3);}
.cmd-kbd{
  font-size:11px;
  padding:2px 6px;
  border-radius:5px;
  border:1px solid var(--line2);
  color:var(--t3);
  font-variant-numeric:tabular-nums;
}
.icon-btn{
  width:38px;height:38px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:10px;
  border:1px solid var(--line);
  background:var(--card);
  color:var(--t2);
  transition:color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.icon-btn:hover{color:var(--t1);border-color:rgba(47,216,255,.45);transform:translateY(-2px);}
.burger{display:none;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:40px;
  padding:0 20px;
  border-radius:10px;
  font-size:14px;
  font-weight:600;
  white-space:nowrap;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
}
.btn-primary{
  background:linear-gradient(120deg,var(--brand) 0%,var(--brand-deep) 100%);
  color:#04131C;
  box-shadow:var(--glow);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 0 1px rgba(47,216,255,.5),0 12px 32px rgba(47,216,255,.34);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{
  background:rgba(17,26,43,.5);
  border:1px solid var(--line2);
  color:var(--t1);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
}
.btn-ghost:hover{border-color:rgba(47,216,255,.5);color:var(--brand);transform:translateY(-2px);}
.btn-block{width:100%;}

/* ============ 页面横幅 ============ */
.page-hero{
  margin-top:28px;
  position:relative;
  border-radius:var(--r-lg);
  overflow:hidden;
  min-height:340px;
  display:flex;
  align-items:flex-end;
  border:1px solid var(--line);
  background:var(--surface);
}
.page-hero-img{
  position:absolute;
  inset:0;
  width:100%;
  height:100%;
  object-fit:cover;
  object-position:center 32%;
}
.page-hero::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(100deg,rgba(6,10,18,.94) 0%,rgba(6,10,18,.78) 42%,rgba(6,10,18,.30) 100%);
}
.page-hero-inner{
  position:relative;
  z-index:2;
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:32px;
  width:100%;
  padding:44px 40px 40px;
}
.perf-line{
  position:absolute;
  left:40px;right:40px;
  top:26px;
  height:8px;
  z-index:2;
  opacity:.5;
  background-image:repeating-linear-gradient(90deg,rgba(255,255,255,.32) 0 10px,transparent 10px 20px);
  border-radius:2px;
}
.hero-copy{max-width:660px;}
.hero-badge{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:5px 12px;
  border-radius:var(--r-sm);
  font-size:13px;
  color:var(--brand);
  background:rgba(17,26,43,.55);
  border:1px solid rgba(47,216,255,.28);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  margin-bottom:16px;
}
.page-hero h1{
  font-size:clamp(30px,4vw,46px);
  margin-bottom:14px;
}
.page-hero p{
  color:var(--t2);
  font-size:15.5px;
  max-width:600px;
}
.breadcrumb{
  font-size:13px;
  color:var(--t3);
  display:flex;
  align-items:center;
  gap:8px;
  white-space:nowrap;
  padding-bottom:6px;
}
.breadcrumb a{color:var(--t2);transition:color .2s var(--ease);}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb .sep{color:#42506b;}
.breadcrumb .current{color:var(--t1);}

/* ============ 筛选条 ============ */
.filters{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:12px;
  margin:44px 0 26px;
  padding-bottom:20px;
  border-bottom:1px solid var(--line);
}
.chip{
  padding:8px 16px;
  border-radius:999px;
  font-size:13.5px;
  color:var(--t2);
  background:var(--card);
  border:1px solid var(--line);
  transition:color .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease),transform .2s var(--ease);
}
.chip:hover{color:var(--t1);transform:translateY(-2px);border-color:rgba(47,216,255,.35);}
.chip.is-current{
  color:var(--brand);
  border-color:rgba(47,216,255,.65);
  background:rgba(47,216,255,.08);
  box-shadow:0 0 0 1px rgba(47,216,255,.18);
}
.filter-count{margin-left:auto;font-size:13px;color:var(--t3);font-variant-numeric:tabular-nums;}

/* ============ 板块标题 ============ */
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:20px;
  margin-bottom:28px;
}
.section-head h2{font-size:clamp(22px,2.4vw,30px);}
.section-head p{color:var(--t3);font-size:13.5px;margin-top:8px;}
.section-link{
  font-size:13.5px;
  color:var(--t2);
  border-bottom:1px solid rgba(47,216,255,.35);
  padding-bottom:2px;
  transition:color .2s var(--ease);
}
.section-link:hover{color:var(--brand);}

/* ============ 卡片网格 ============ */
.grid-section{padding-bottom:8px;}
.card-grid{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:24px;
}
@media (max-width:1279px){.card-grid{grid-template-columns:repeat(3,minmax(0,1fr));}}
@media (max-width:1023px){.card-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;}}
@media (max-width:640px){.card-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;}}

.show-card{
  position:relative;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  overflow:hidden;
  box-shadow:var(--sh-card);
  transition:transform .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
  height:100%;
  display:flex;
  flex-direction:column;
}
.show-card:hover{transform:translateY(-4px);border-color:rgba(47,216,255,.40);}
.show-card.is-hidden{display:none;}
.show-thumb{position:relative;overflow:hidden;background:linear-gradient(120deg,var(--brand-deep),var(--brand));}
.show-thumb img{
  width:100%;
  aspect-ratio:16/9;
  object-fit:cover;
  transition:transform .35s var(--ease);
}
.show-card:hover .show-thumb img{transform:scale(1.05);}
.score{
  position:absolute;
  top:10px;right:10px;
  padding:3px 8px;
  border-radius:var(--r-sm);
  font-size:12.5px;
  font-weight:700;
  color:var(--amber);
  background:rgba(6,10,18,.72);
  border:1px solid rgba(255,176,58,.55);
  font-variant-numeric:tabular-nums;
  z-index:2;
}
.thumb-veil{
  position:absolute;
  inset:0;
  display:flex;
  align-items:center;
  justify-content:center;
  background:linear-gradient(0deg,rgba(6,10,18,.78),rgba(6,10,18,.18));
  opacity:0;
  transition:opacity .24s var(--ease);
}
.show-card:hover .thumb-veil{opacity:1;}
.thumb-veil span{
  padding:8px 16px;
  border-radius:999px;
  font-size:13px;
  font-weight:600;
  color:#04131C;
  background:linear-gradient(120deg,var(--brand),var(--brand-deep));
  box-shadow:0 0 0 1px rgba(47,216,255,.35),0 8px 24px rgba(47,216,255,.28);
}
.show-body{padding:16px 16px 18px;display:flex;flex-direction:column;gap:8px;flex:1;}
.tag{
  align-self:flex-start;
  font-size:12px;
  padding:3px 9px;
  border-radius:var(--r-sm);
  color:var(--magenta);
  background:rgba(255,94,138,.10);
  border:1px solid rgba(255,94,138,.30);
}
.show-body h3{
  font-size:16px;
  line-height:1.4;
  display:-webkit-box;
  -webkit-line-clamp:1;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.show-body .desc{
  font-size:13.5px;
  color:var(--t2);
  line-height:1.7;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.meta-row{
  margin-top:auto;
  display:flex;
  align-items:center;
  gap:8px;
  font-size:12.5px;
  color:var(--t3);
  font-variant-numeric:tabular-nums;
}
.meta-row .dot{color:#38455e;}

/* ============ 数据条 ============ */
.stats{
  margin-top:72px;
  padding:32px;
  border-radius:var(--r-lg);
  background:var(--surface);
  border:1px solid var(--line);
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
}
.stat b{
  display:block;
  font-size:clamp(24px,2.6vw,32px);
  font-variant-numeric:tabular-nums;
  background:linear-gradient(120deg,var(--brand),#8fdcff);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
  line-height:1.3;
}
.stat span{font-size:13px;color:var(--t3);}
@media (max-width:1023px){.stats{grid-template-columns:repeat(2,1fr);}}
@media (max-width:520px){.stats{grid-template-columns:1fr 1fr;padding:24px 18px;gap:18px;}}

/* ============ FAQ ============ */
.faq-section{margin-top:88px;}
.faq-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:0 40px;
}
@media (max-width:900px){.faq-grid{grid-template-columns:1fr;}}
.faq-item{border-bottom:1px solid var(--line);position:relative;}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  padding:20px 34px 20px 6px;
  font-size:16px;
  font-weight:600;
  color:var(--t1);
  position:relative;
  transition:color .2s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::before{
  content:"";
  position:absolute;
  left:-10px;
  top:22px;bottom:22px;
  width:3px;
  border-radius:3px;
  background:linear-gradient(180deg,var(--brand),var(--brand-deep));
  box-shadow:0 0 12px rgba(47,216,255,.75);
  opacity:0;
  transition:opacity .2s var(--ease);
}
.faq-item[open] summary::before{opacity:1;}
.faq-item summary::after{
  content:"\f078";
  font-family:"Font Awesome 6 Free";
  font-weight:900;
  font-size:12px;
  position:absolute;
  right:8px;
  top:24px;
  color:var(--t3);
  transition:transform .2s var(--ease),color .2s var(--ease);
}
.faq-item[open] summary::after{transform:rotate(90deg);color:var(--brand);}
.faq-item summary:hover{color:var(--brand);}
.faq-answer{
  padding:0 40px 20px 6px;
  font-size:15px;
  color:var(--t2);
  line-height:1.7;
}

/* ============ CTA 条幅 ============ */
.cta-banner{
  margin:88px 0 0;
  padding:40px 44px;
  border-radius:var(--r-lg);
  background:rgba(17,26,43,.55);
  border:1px solid rgba(47,216,255,.30);
  box-shadow:0 0 0 1px rgba(47,216,255,.12),0 20px 60px rgba(0,0,0,.45);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  position:relative;
  overflow:hidden;
}
.cta-banner::before{
  content:"";
  position:absolute;
  width:420px;height:420px;
  right:-140px;top:-200px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(47,216,255,.22),transparent 68%);
  pointer-events:none;
}
.cta-copy{max-width:640px;position:relative;}
.cta-copy h2{font-size:clamp(22px,2.4vw,30px);margin-bottom:10px;}
.cta-copy p{color:var(--t2);font-size:15px;}
.cta-actions{display:flex;align-items:center;gap:18px;position:relative;}
.ghost-link{
  font-size:14px;
  color:var(--t2);
  border-bottom:1px solid rgba(168,182,206,.45);
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.ghost-link:hover{color:var(--brand);border-color:var(--brand);}
@media (max-width:820px){
  .cta-banner{flex-direction:column;align-items:stretch;text-align:center;padding:32px 22px;}
  .cta-actions{flex-direction:column;gap:14px;}
  .cta-actions .btn{width:100%;}
}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:96px;
  background:#04070D;
  border-top:1px solid rgba(255,255,255,.08);
  padding-top:56px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:44px;
}
.footer-brand .logo{margin-bottom:14px;}
.footer-brand p{font-size:13.5px;color:var(--t3);line-height:1.8;max-width:340px;}
.footer-col h4{font-size:14px;color:var(--t1);margin-bottom:16px;font-weight:700;}
.footer-col ul li{margin-bottom:10px;font-size:13.5px;color:var(--t3);}
.footer-col ul li a{color:var(--t3);transition:color .2s var(--ease);}
.footer-col ul li a:hover{color:var(--brand);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);
  padding:20px 32px;
  max-width:1280px;
  margin:0 auto;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  font-size:13px;
  color:var(--t3);
}
.back-top{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--t2);
  border:1px solid var(--line2);
  border-radius:var(--r-sm);
  padding:7px 12px;
  transition:color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.back-top:hover{color:var(--brand);border-color:rgba(47,216,255,.5);transform:translateY(-2px);}
@media (max-width:1023px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:640px){
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;text-align:center;}
}

/* ============ 抽屉菜单 ============ */
.drawer{
  position:fixed;
  top:0;right:0;
  width:84vw;
  max-width:340px;
  height:100vh;
  z-index:90;
  transform:translateX(102%);
  transition:transform .3s var(--ease);
  background:rgba(17,26,43,.86);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-left:1px solid var(--line2);
  display:flex;
  flex-direction:column;
  padding:22px 22px 26px;
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px;}
.drawer nav{display:flex;flex-direction:column;}
.drawer nav a{
  height:52px;
  display:flex;
  align-items:center;
  border-bottom:1px solid var(--line);
  font-size:15px;
  color:var(--t2);
  transition:color .2s var(--ease),padding-left .2s var(--ease);
}
.drawer nav a:hover,.drawer nav a.is-active{color:var(--brand);padding-left:6px;}
.drawer .btn{margin-top:auto;}
.drawer-mask{
  position:fixed;
  inset:0;
  background:rgba(4,7,13,.62);
  z-index:80;
  opacity:0;
  visibility:hidden;
  transition:opacity .3s var(--ease),visibility .3s var(--ease);
}
.drawer-mask.is-open{opacity:1;visibility:visible;}

/* ============ 分页 ============ */
.pager{
  display:flex;
  justify-content:center;
  align-items:center;
  gap:8px;
  margin-top:48px;
  flex-wrap:wrap;
}
.pager a,.pager span{
  min-width:36px;height:36px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:8px;
  font-size:13.5px;
  color:var(--t2);
  background:var(--card);
  border:1px solid var(--line);
  font-variant-numeric:tabular-nums;
  transition:color .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
}
.pager a:hover{color:var(--brand);border-color:rgba(47,216,255,.5);}
.pager .is-current{
  background:linear-gradient(120deg,var(--brand),var(--brand-deep));
  color:#04131C;
  font-weight:700;
  border-color:transparent;
}

/* ============ 动效与辅助 ============ */
.reveal{opacity:0;transform:translateY(12px);}
.reveal.is-in{opacity:1;transform:none;transition:opacity .3s var(--ease),transform .3s var(--ease);}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;}
  *{transition-duration:.01ms !important;animation-duration:.01ms !important;}
}
@media (max-width:1023px){
  .cmd-search{display:none;}
  .burger{display:inline-flex;}
  .main-nav{display:none;}
  .icon-btn:not(.burger){display:none;}
  .site-header.is-scrolled{height:56px;}
}
@media (max-width:640px){
  :root{--header-h:56px;}
  .btn-primary{padding:0 14px;font-size:13.5px;}
  .page-hero{min-height:300px;margin-top:18px;}
  .page-hero-inner{flex-direction:column;align-items:flex-start;padding:30px 20px 26px;gap:14px;}
  .perf-line{left:20px;right:20px;}
  .breadcrumb{order:-1;}
  .section-head{flex-direction:column;align-items:flex-start;gap:10px;}
  .show-body{padding:12px 12px 14px;}
  .show-body h3{font-size:14px;}
  .show-body .desc{font-size:12.5px;-webkit-line-clamp:2;}
  .stat b{font-size:22px;}
}

/* roulang page: category2 */
/* ================= 设计变量 ================= */
:root{
  --bg:#060A12;
  --surface:#0B1220;
  --card:#111A2B;
  --line:rgba(255,255,255,.07);
  --line-2:rgba(255,255,255,.10);
  --brand:#2FD8FF;
  --brand-deep:#1273EA;
  --accent:#FFB03A;
  --magenta:#FF5E8A;
  --t1:#EAF2FF;
  --t2:#A8B6CE;
  --t3:#6E7E99;
  --r-sm:6px;
  --r-md:14px;
  --r-lg:22px;
  --shadow:0 8px 24px rgba(0,0,0,.35);
  --glow:0 0 0 1px rgba(47,216,255,.35),0 8px 28px rgba(47,216,255,.28);
  --ease:cubic-bezier(.2,.7,.3,1);
  --container:1280px;
  --head-h:64px;
}
/* ================= 基础重置 ================= */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--t1);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:-1;
  pointer-events:none;
  opacity:.04;
  background-image:
    linear-gradient(rgba(255,255,255,.7) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.7) 1px,transparent 1px);
  background-size:64px 64px;
}
h1,h2,h3,h4{margin:0;line-height:1.25;font-weight:700}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none;transition:color .22s var(--ease),border-color .22s var(--ease)}
button,input{font:inherit;color:inherit}
button{cursor:pointer}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}
.num{font-family:"DIN Alternate","Bahnschrift",ui-monospace,"SFMono-Regular",Menlo,monospace;font-variant-numeric:tabular-nums}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px}
/* ================= 通用组件 ================= */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:40px;padding:0 20px;border-radius:10px;border:1px solid transparent;
  font-size:14px;font-weight:600;white-space:nowrap;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease),border-color .22s var(--ease),color .22s var(--ease);
}
.btn-primary{
  background:linear-gradient(120deg,#2FD8FF 0%,#1273EA 100%);
  color:#04121F;
  box-shadow:var(--glow);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 0 1px rgba(47,216,255,.5),0 12px 32px rgba(47,216,255,.34)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{
  background:rgba(17,26,43,.55);
  border-color:var(--line-2);
  color:var(--t1);
}
.btn-ghost:hover{border-color:rgba(47,216,255,.5);color:#fff;transform:translateY(-2px)}
.btn-lg{height:48px;padding:0 28px;font-size:15px;border-radius:12px}
.btn[disabled],.btn.is-done{
  background:transparent;border-color:var(--line-2);color:var(--t3);
  box-shadow:none;transform:none;cursor:default;
}
.icon-btn{
  width:38px;height:38px;display:grid;place-items:center;
  border-radius:10px;border:1px solid var(--line);background:var(--card);color:var(--t2);
  transition:color .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease);
}
.icon-btn:hover{color:var(--t1);border-color:rgba(47,216,255,.4);transform:translateY(-1px)}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border-radius:var(--r-sm);
  background:rgba(17,26,43,.6);border:1px solid var(--line-2);
  font-size:13px;color:var(--t2);backdrop-filter:blur(10px);
}
.badge-brand{color:var(--brand);border-color:rgba(47,216,255,.35)}
.badge-magenta{color:var(--magenta);border-color:rgba(255,94,138,.32)}
.score{
  display:inline-flex;align-items:center;gap:4px;
  font-size:13px;color:var(--accent);
  padding:2px 8px;border-radius:var(--r-sm);
  border:1px solid rgba(255,176,58,.45);
  background:rgba(255,176,58,.08);
}
.link-more{color:var(--brand);font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:6px}
.link-more:hover{color:#7EE6FF}
.link-more i{transition:transform .22s var(--ease)}
.link-more:hover i{transform:translateX(3px)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px;flex-wrap:wrap}
.section-head h2{font-size:30px}
.section-head p{color:var(--t2);font-size:14px;margin-top:10px;max-width:660px}
/* ================= 顶部导航 ================= */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(6,10,18,.72);
  border-bottom:1px solid transparent;
  transition:background .28s var(--ease),border-color .28s var(--ease),box-shadow .28s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(17,26,43,.55);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom-color:var(--line-2);
  box-shadow:0 10px 30px rgba(0,0,0,.35);
}
.header-inner{display:flex;align-items:center;gap:28px;height:var(--head-h);transition:height .28s var(--ease)}
.site-header.is-scrolled .header-inner{height:56px}
.logo{display:inline-flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:var(--t1)}
.logo-mark{
  width:22px;height:22px;border-radius:var(--r-sm);
  background:linear-gradient(120deg,#2FD8FF 0%,#1273EA 100%);
  box-shadow:0 0 0 1px rgba(47,216,255,.35),0 6px 18px rgba(47,216,255,.28);
  position:relative;flex:none;
}
.logo-mark::after{
  content:"";position:absolute;inset:6px 6px 6px 6px;border-radius:2px;
  background:rgba(4,18,31,.72);
}
.main-nav{display:flex;align-items:center;gap:28px;margin-right:auto}
.main-nav a{position:relative;font-size:14px;color:var(--t2);padding:6px 0}
.main-nav a:hover{color:var(--t1)}
.main-nav a.is-active{color:var(--t1);font-weight:600}
.main-nav a.is-active::after{
  content:"";position:absolute;left:0;right:0;bottom:-6px;height:2px;border-radius:2px;
  background:var(--brand);box-shadow:0 0 10px rgba(47,216,255,.75);
}
.header-right{display:flex;align-items:center;gap:12px}
.cmd-search{
  display:flex;align-items:center;gap:8px;
  width:290px;height:38px;padding:0 12px;
  background:var(--card);border:1px solid var(--line);border-radius:10px;color:var(--t3);
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.cmd-search:focus-within{border-color:rgba(47,216,255,.5);box-shadow:0 0 0 2px rgba(47,216,255,.18)}
.cmd-search input{flex:1;min-width:0;background:transparent;border:0;outline:none;font-size:14px;color:var(--t1)}
.cmd-search input::placeholder{color:var(--t3)}
.cmd-kbd{font-size:11px;padding:2px 6px;border:1px solid var(--line-2);border-radius:var(--r-sm);color:var(--t3)}
.burger{display:none}
/* ================= 移动抽屉 ================= */
.drawer-mask{
  position:fixed;inset:0;z-index:70;background:rgba(4,8,14,.65);
  opacity:0;pointer-events:none;transition:opacity .28s var(--ease);
}
.drawer-mask.is-open{opacity:1;pointer-events:auto}
.drawer{
  position:fixed;top:0;right:0;bottom:0;z-index:80;
  width:84vw;max-width:360px;padding:24px 20px;
  display:flex;flex-direction:column;
  background:rgba(11,18,32,.94);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-left:1px solid var(--line-2);
  transform:translateX(100%);
  transition:transform .3s var(--ease);
}
.drawer.is-open{transform:none}
.drawer-title{font-size:14px;color:var(--t3);margin-bottom:8px}
.drawer a.drawer-link{display:flex;align-items:center;height:52px;border-bottom:1px solid var(--line);color:var(--t2);font-size:15px}
.drawer a.drawer-link:hover{color:var(--t1)}
.drawer a.drawer-link.is-active{color:var(--brand)}
.drawer .btn{width:100%;margin-top:auto}
body.no-scroll{overflow:hidden}
/* ================= 分类页头（左文右图） ================= */
.cat-hero{
  position:relative;
  padding:64px 0 56px;
  background:
    radial-gradient(900px 420px at 84% 12%,rgba(47,216,255,.14),transparent 62%),
    linear-gradient(180deg,#0B1220 0%,#060A12 100%);
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.cat-hero-inner{display:grid;grid-template-columns:minmax(0,1fr) 420px;gap:56px;align-items:center}
.crumbs{font-size:13px;color:var(--t3);display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-bottom:22px}
.crumbs a:hover{color:var(--brand)}
.crumbs span.sep{opacity:.5}
.cat-hero h1{font-size:clamp(30px,4.4vw,48px);letter-spacing:-.5px;margin-top:16px}
.cat-hero .lead{color:var(--t2);font-size:16px;line-height:1.8;margin-top:16px;max-width:620px}
.stat-pills{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.stat-pill{
  padding:8px 14px;border-radius:var(--r-sm);
  border:1px solid var(--line-2);background:rgba(17,26,43,.6);
  font-size:13px;color:var(--t2);
}
.stat-pill strong{color:var(--brand);margin-right:4px}
.hero-actions{display:flex;gap:14px;margin-top:30px;flex-wrap:wrap}
.cat-hero-visual{position:relative}
.cat-hero-visual img{
  width:100%;aspect-ratio:16/11;object-fit:cover;
  border-radius:var(--r-lg);border:1px solid var(--line-2);
  box-shadow:var(--shadow);
}
.cat-hero-visual .float-tag{
  position:absolute;right:16px;bottom:16px;
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 14px;border-radius:var(--r-sm);
  background:rgba(17,26,43,.55);border:1px solid rgba(47,216,255,.35);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  font-size:13px;color:var(--t1);
}
/* ================= 数据条 ================= */
.value-band{background:var(--surface);border-bottom:1px solid var(--line)}
.value-inner{display:grid;grid-template-columns:repeat(4,1fr)}
.value-item{padding:30px 26px;border-left:1px solid var(--line)}
.value-item:first-child{border-left:0;padding-left:0}
.value-item h3{font-size:16px;display:flex;align-items:center;gap:9px}
.value-item h3 i{color:var(--brand);font-size:15px}
.value-item p{color:var(--t2);font-size:14px;line-height:1.7;margin-top:10px}
/* ================= 列表流主体 ================= */
.flow-section{padding:96px 0}
.flow-grid{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:48px;align-items:start}
.flow-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:26px;flex-wrap:wrap}
.flow-head h2{font-size:28px}
.flow-head p{color:var(--t2);font-size:14px;margin-top:10px;max-width:620px}
.flow-list li{
  display:grid;grid-template-columns:280px minmax(0,1fr);gap:24px;
  padding:28px 0;border-bottom:1px solid var(--line-2);
}
.flow-list li:first-child{padding-top:0}
.flow-list li.is-hidden{display:none}
.flow-thumb{
  position:relative;border-radius:var(--r-md);overflow:hidden;
  aspect-ratio:7/4;
  background:linear-gradient(120deg,#1273EA 0%,#2FD8FF 100%);
  border:1px solid var(--line);
}
.flow-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .45s var(--ease)}
.flow-list li:hover .flow-thumb img{transform:scale(1.05)}
.flow-thumb .score{position:absolute;right:10px;top:10px;background:rgba(6,10,18,.72);backdrop-filter:blur(6px)}
.flow-body h3{font-size:20px}
.flow-body h3 a:hover{color:var(--brand)}
.flow-body .desc{color:var(--t2);font-size:15px;line-height:1.8;margin-top:12px}
.flow-meta{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-top:14px;font-size:13px;color:var(--t3)}
.flow-meta .dot{width:3px;height:3px;border-radius:50%;background:var(--t3);opacity:.7}
.flow-link{display:inline-flex;align-items:center;gap:6px;margin-top:14px;font-size:14px;font-weight:600;color:var(--brand)}
.flow-link:hover{color:#7EE6FF}
.flow-link i{transition:transform .22s var(--ease)}
.flow-link:hover i{transform:translateX(3px)}
.load-more-wrap{margin-top:32px}
.load-more-wrap .btn{width:100%;height:46px;border-radius:12px}
/* ================= 侧栏 ================= */
.flow-side{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px}
.side-card{
  background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-md);padding:22px;box-shadow:var(--shadow);
}
.side-card h3{font-size:16px;display:flex;align-items:center;gap:8px;margin-bottom:16px}
.side-card h3 i{color:var(--accent);font-size:14px}
.hot-list li{display:grid;grid-template-columns:96px minmax(0,1fr);gap:12px;padding:12px 0;border-bottom:1px solid var(--line)}
.hot-list li:last-child{border-bottom:0;padding-bottom:0}
.hot-list li:first-child{padding-top:0}
.hot-list .thumb{
  width:96px;height:64px;border-radius:var(--r-sm);overflow:hidden;
  background:linear-gradient(120deg,#1273EA 0%,#2FD8FF 100%);
}
.hot-list .thumb img{width:100%;height:100%;object-fit:cover}
.hot-list .t{font-size:14px;color:var(--t1);line-height:1.5;display:block}
.hot-list a:hover .t{color:var(--brand)}
.hot-list .m{font-size:12px;color:var(--t3);margin-top:6px;display:flex;align-items:center;gap:8px}
.tag-cloud{display:flex;flex-wrap:wrap;gap:8px}
.tag-cloud a{
  padding:6px 12px;border-radius:var(--r-sm);font-size:13px;color:var(--t2);
  border:1px solid var(--line-2);background:rgba(17,26,43,.5);
}
.tag-cloud a:hover{color:var(--brand);border-color:rgba(47,216,255,.45)}
.side-tip{font-size:14px;color:var(--t2);line-height:1.75}
.side-tip strong{color:var(--t1);display:block;margin-bottom:8px;font-size:15px}
/* ================= 挑选流程 ================= */
.steps-section{padding:0 0 96px}
.steps-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;margin-top:8px}
.step{
  position:relative;padding:30px 26px 28px;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-md);
  overflow:hidden;transition:transform .26s var(--ease),border-color .26s var(--ease);
}
.step:hover{transform:translateY(-4px);border-color:rgba(47,216,255,.32)}
.step .watermark{
  position:absolute;right:14px;top:2px;
  font-size:64px;font-weight:800;line-height:1;
  color:transparent;-webkit-text-stroke:1px rgba(47,216,255,.28);
  font-family:"DIN Alternate","Bahnschrift",ui-monospace,monospace;
  pointer-events:none;
}
.step h3{font-size:19px;position:relative;z-index:1}
.step p{color:var(--t2);font-size:14px;line-height:1.75;margin-top:12px;position:relative;z-index:1}
/* ================= 适用场景 ================= */
.scene-section{padding:0 0 96px}
.scene-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.scene{
  display:grid;grid-template-columns:44px minmax(0,1fr);gap:16px;
  padding:22px;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--r-md);
  transition:border-color .26s var(--ease),transform .26s var(--ease);
}
.scene:hover{border-color:rgba(47,216,255,.3);transform:translateY(-3px)}
.scene .ico{
  width:44px;height:44px;border-radius:var(--r-sm);display:grid;place-items:center;
  background:rgba(47,216,255,.10);border:1px solid rgba(47,216,255,.28);color:var(--brand);font-size:16px;
}
.scene h3{font-size:16px}
.scene p{color:var(--t2);font-size:14px;line-height:1.75;margin-top:8px}
/* ================= FAQ ================= */
.faq-section{padding:0 0 96px}
.faq-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 48px;margin-top:8px}
.faq-item{position:relative;border-bottom:1px solid var(--line-2);padding-left:16px}
.faq-item::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;border-radius:2px;
  background:var(--brand);opacity:0;transition:opacity .24s var(--ease);
  box-shadow:0 0 12px rgba(47,216,255,.7);
}
.faq-item.is-open::before{opacity:1}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 0;background:transparent;border:0;text-align:left;
  font-size:17px;font-weight:600;color:var(--t1);
}
.faq-q:hover{color:var(--brand)}
.faq-q i{color:var(--t3);font-size:13px;transition:transform .22s var(--ease),color .22s var(--ease)}
.faq-item.is-open .faq-q i{transform:rotate(90deg);color:var(--brand)}
.faq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows .28s var(--ease)}
.faq-a-inner{overflow:hidden}
.faq-a-inner p{color:var(--t2);font-size:15px;line-height:1.7;padding-bottom:20px}
.faq-item.is-open .faq-a{grid-template-rows:1fr}
/* ================= CTA 条幅 ================= */
.cta-wrap{padding:0 0 96px}
.cta-band{
  display:flex;align-items:center;justify-content:space-between;gap:36px;
  padding:40px 44px;border-radius:var(--r-lg);
  background:linear-gradient(120deg,rgba(18,115,234,.22) 0%,rgba(47,216,255,.10) 100%);
  border:1px solid rgba(47,216,255,.32);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  box-shadow:0 0 0 1px rgba(47,216,255,.18),0 18px 48px rgba(0,0,0,.4);
}
.cta-band h2{font-size:26px;max-width:640px}
.cta-band p{color:var(--t2);font-size:15px;margin-top:12px}
.cta-actions{display:flex;align-items:center;gap:20px;flex-wrap:wrap;flex:none}
.cta-ghost{font-size:14px;color:var(--t2);text-decoration:underline;text-underline-offset:5px}
.cta-ghost:hover{color:var(--t1)}
/* ================= 页脚 ================= */
.site-footer{background:#04070D;border-top:1px solid rgba(255,255,255,.08)}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;
  padding:64px 0 44px;
}
.footer-brand .logo{margin-bottom:16px}
.footer-brand p{color:var(--t2);font-size:14px;line-height:1.8;max-width:320px}
.footer-col h4{font-size:15px;margin-bottom:16px;color:var(--t1)}
.footer-col ul li{margin-bottom:10px}
.footer-col ul li a,.footer-col ul li{color:var(--t2);font-size:14px}
.footer-col ul li a:hover{color:var(--brand)}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
  padding:20px 0 28px;border-top:1px solid rgba(255,255,255,.08);
  font-size:13px;color:var(--t3);
}
.back-top{
  display:inline-flex;align-items:center;gap:8px;
  background:transparent;border:1px solid var(--line-2);border-radius:var(--r-sm);
  padding:8px 14px;font-size:13px;color:var(--t2);
  transition:color .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease);
}
.back-top:hover{color:var(--brand);border-color:rgba(47,216,255,.4);transform:translateY(-2px)}
/* ================= 空态 ================= */
.empty-state{
  padding:48px 24px;text-align:center;
  border:1px dashed var(--line-2);border-radius:var(--r-md);
  background:rgba(17,26,43,.4);color:var(--t2);
}
.empty-state i{font-size:26px;color:var(--t3);display:block;margin-bottom:14px}
.empty-state p{font-size:14px}
/* ================= 响应式 ================= */
@media (max-width:1279px){
  .flow-grid{grid-template-columns:minmax(0,1fr) 300px;gap:36px}
  .value-item{padding:26px 20px}
}
@media (max-width:1023px){
  .container{padding:0 24px}
  .main-nav{display:none}
  .cmd-search{display:none}
  .burger{display:grid}
  .cat-hero-inner{grid-template-columns:1fr;gap:36px}
  .cat-hero-visual{max-width:560px}
  .value-inner{grid-template-columns:repeat(2,1fr)}
  .value-item{border-left:0;border-top:1px solid var(--line);padding:24px 0}
  .value-item:nth-child(1),.value-item:nth-child(2){border-top:0}
  .flow-grid{grid-template-columns:1fr}
  .flow-side{position:static}
  .steps-grid{grid-template-columns:1fr;gap:16px}
  .faq-grid{grid-template-columns:1fr;gap:0}
  .cta-band{flex-direction:column;align-items:flex-start;padding:32px 28px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;padding:48px 0 32px}
  .section-head h2{font-size:26px}
}
@media (max-width:639px){
  .container{padding:0 16px}
  .cat-hero{padding:44px 0 40px}
  .flow-section{padding:56px 0}
  .steps-section,.scene-section,.faq-section,.cta-wrap{padding-bottom:56px}
  .flow-list li{grid-template-columns:1fr;gap:16px;padding:22px 0}
  .flow-thumb{aspect-ratio:16/9}
  .scene-grid{grid-template-columns:1fr}
  .cta-band h2{font-size:22px}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .header-inner{gap:14px}
  .logo span:last-child{font-size:16px}
  .hero-actions .btn{width:100%}
  .section-head{margin-bottom:24px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
}
@media print{
  body{background:#fff;color:#111}
  .site-header,.drawer,.drawer-mask,.cta-wrap,.back-top{display:none !important}
}